Specifications: The APW412EH is the surface-mount SMD-8 version of a dual-channel Normally Closed (SPST-NC) SSR. Each channel is rated for 400mA at 60V (AC/DC) with 1Ω on-resistance and 5000Vrms isolation. Switching times are 500μs (open) and 250μs (close). It operates from -40°C to 85°C with 1.2-1.4VDC. Application Scenarios: A surface-mount solution for dual fail-safe channels. Used in modern safety-critical systems like automotive control units, compact medical devices, and high-density industrial controllers where two loads must default to an energized state unless the control circuit actively interrupts them.